import {
  ADD_COUNTER,
  ADD_TO_CART
} from './mutation-types'

export default {
  addCart(context,payload){
    return new Promise((resolve,reject)=>{
      // 查找之前数据中是否有该商品
      let oldProduct = context.state.cartList.find(item => item.iid === payload.iid)
      // 判断oldProduct 
      if(oldProduct){
        // oldProduct.count += 1
        context.commit(ADD_COUNTER, oldProduct)
        resolve('当前的商品数量+1')
        reject("添加失败")
      }else{
        payload.count=1
        // context.state.cartList.push(payload)
        context.commit(ADD_TO_CART, payload)
        resolve('添加了新的商品')
        reject("添加失败")
      }
    })
  }
}
  